Abstract: An electrocardiography monitoring system is provided, which includes (a) an electrocardiography electrodes holder including (i) a flexible nonconductive flattened article having a fixed precordial configuration, the article featuring a first plane and an opposite second plane, the article serving for holding electrocardiography electrodes; (ii) electrocardiograph electronics attached to the article and in electrical communication with the electrocardiography electrodes; and (iii) a transmitter attached to the article, the transmitter communicating with the electrocardiograph electronics and serving for communicating electrocardiograph signals to a compatible receiver; (b) a receiver compatible for operation with the transmitter; and (c) a computer communicating with the receiver for storing, presenting and/or analyzing the electrocardiograph signals.